654320 has 20 divisors (see below), whose sum is σ = 1521480. Its totient is φ = 261696.

The previous prime is 654307. The next prime is 654323. The reversal of 654320 is 23456.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 654292 and 654301.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 654320.

It is not an unprimeable number, because it can be changed into a prime (654323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4010 + ... + 4169.

It is an arithmetic number, because the mean of its divisors is an integer number (76074).

2⁶⁵⁴³²⁰ is an apocalyptic number.

It is an amenable number.

654320 is an abundant number, since it is smaller than the sum of its proper divisors (867160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

654320 is a wasteful number, since it uses less digits than its factorization.

654320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8192 (or 8186 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 654320 is about 808.9004883173. The cubic root of 654320 is about 86.8153922317.

Adding to 654320 its reverse (23456), we get a palindrome (677776).

The spelling of 654320 in words is "six hundred fifty-four thousand, three hundred twenty".